Lowland Nepenthes and even some odd highlander seed are notoriously "dirty" in terms of fungal contamination; and one of the easier methods for cleaning them, prior to sowing; or, for use in TC, involves cleaning the seed with peracetic acid or vinoxide (CH3OOOH), which can easily be prepared with household 3% hydrogen peroxide and white vinegar -- acetic acid, typically at 5% acidity. It is prepared in a 4:1 ratio of H2O2 to vinegar. The vinegar is heated to boiling in a microwave and added to room temperature H2O2. It is a powerful oxidizer and antimicrobial, but does not harm the seed.
They can be soaked for as little as an thirty minutes and sown without rinsing.[/I]